Title:
エンジン
Document Type and Number:
Japanese Patent JP7264798
Kind Code:
B2
Abstract:
To provide an engine increased in heat quantity of an exhaust gas capable of being utilized in an exhaust passage.SOLUTION: An engine includes an exhaust manifold 3 as an exhaust passage component 1 constituting an exhaust passage. The exhaust manifold is composed of iron-based metal as a material, and includes a heat-storage swollen portion 3m swollen from a thick wall 3k to the outside, and an oxide film 1b of triiron tetraoxide formed on a swollen face 3n of the heat-storage swollen portion. The heat-storage swollen portion is preferably swollen from a thick wall part 3ka against which the exhaust gas flowing out from an exhaust port 6c of a cylinder head 6 is blown, to the outside. The exhaust manifold preferably includes the oxide film of triiron tetraoxide formed on an outer face 1c excluding the swollen face, of the heat-storage swollen portion.SELECTED DRAWING: Figure 1
Inventors:
Hideyuki Koyama
Rina Kaneko
Shingo Matsunobu
Morinaga Hidetaka
Hiroki Oso
Rina Kaneko
Shingo Matsunobu
Morinaga Hidetaka
Hiroki Oso
Application Number:
JP2019217787A
Publication Date:
April 25, 2023
Filing Date:
December 02, 2019
Export Citation:
Assignee:
Kubota Corporation
International Classes:
F01N13/14; F01N3/08; F01N3/24; F01N5/02; F01N13/10; F01N13/16; F01N13/18; F02B39/00; F02B77/02; F02B77/11
Domestic Patent References:
| JP2000199427A | ||||
| JP2016084745A | ||||
| JP2005194962A |
Foreign References:
| US20090241521 |
Attorney, Agent or Firm:
Suzue Shoji